Karl was very clear about one thing.
The black fog still existed in the Spirit Realm, and the connection that communicated between two places couldn't be permanently severed; it wouldn't be long before Colin and Inna would return to their original position.
Although it was an ability to teleport, there was a time limit.
Karl also knew that the family's secrets couldn't be allowed to leak out, and that he absolutely had to resolve the issue with "Mr. Brandy" once and for all.
Thus, in a rare act, he directly bestowed a divine oracle upon Byrne.
In fact, over the years, Karl had seldom given divine oracles to the mainstay of the family, Byrne, mainly bestowing them upon the Priest.
By doing so, he wouldn't make Byrne feel overly favored, fostering a desire to control both secular and divine powers at the same time.
The content of that divine oracle was precisely his request to Byrne on how to handle the matter.